176
FNCA52 TJSJ 091930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST TUE JUN 9 2026
DISCUSSION
DRIER-THAN-NORMAL CONDITIONS WILL ENHANCE THE AVAILABILITY OF
BURNING FUELS ALONG THE SOUTHERN PLAINS OF PR AND THE USVI. THE
FIRE DANGER FRO TODAY IS LOW, AS CONDITIONS ARE PRESENT.
PRZ014-100800-
SOUTHEAST COASTAL PLAINS-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 10 10 30
TEMP (24H TREND) 73 (-1) 90 (+1) 72 91
RH % (24H TREND) 85 (+1) 45 (-5) 90 50
WIND 20FT/EARLY(MPH) E 9 E 11 E 10 E 13
WIND 20FT/LATE(MPH) NE 9 SE 13 NE 8 SE 16
MIXING HGT(FT-AGL/MSL) 4600 4740
TRANSPORT WND (MPH) E 9 E 12
VENT RATE (KT-FT) 36800 47400
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-100800-
SOUTHERN HILLS-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 40 10 50
TEMP (24H TREND) 69 (-3) 88 (+3) 69 87
RH % (24H TREND) 94 (+4) 53 (-8) 94 62
WIND 20FT/EARLY(MPH) E 8 E 9 E 8 E 10
WIND 20FT/LATE(MPH) E 8 SE 10 E 8 SE 12
MIXING HGT(FT-AGL/MSL) 5630 5770
TRANSPORT WND (MPH) E 7 E 10
VENT RATE (KT-FT) 33780 51930
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-100800-
NORTH COASTAL PLAINS-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 20 10 30
TEMP (24H TREND) 72 (-2) 90 (+1) 72 90
RH % (24H TREND) 93 (+1) 52 (-9) 93 60
WIND 20FT/EARLY(MPH) E 9 E 10 E 12 E 11
WIND 20FT/LATE(MPH) SE 8 NE 14 SE 8 E 16
MIXING HGT(FT-AGL/MSL) 4610 4930
TRANSPORT WND (MPH) E 8 E 9
VENT RATE (KT-FT) 32270 39440
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-100800-
NORTHERN HILLS-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 0 50 20 50
TEMP (24H TREND) 70 (-1) 89 (+1) 69 89
RH % (24H TREND) 95 (+1) 53 (-7) 94 61
WIND 20FT/EARLY(MPH) E 6 E 8 E 10 E 10
WIND 20FT/LATE(MPH) SE 5 NE 12 SE 5 E 13
MIXING HGT(FT-AGL/MSL) 5830 6150
TRANSPORT WND (MPH) E 6 SE 6
VENT RATE (KT-FT) 29150 30750
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-100800-
WEST COAST-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 10 50 30 60
TEMP (24H TREND) 72 (-2) 91 (+1) 72 91
RH % (24H TREND) 96 (+6) 54 (-7) 93 59
WIND 20FT/EARLY(MPH) E 6 E 10 E 10 E 10
WIND 20FT/LATE(MPH) E 9 E 9 E 10 E 11
MIXING HGT(FT-AGL/MSL) 4730 4520
TRANSPORT WND (MPH) E 6 SE 7
VENT RATE (KT-FT) 23650 27120
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-100800-
EASTERN INTERIOR-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 30 30 60
TEMP (24H TREND) 70 (-3) 89 (+2) 70 88
RH % (24H TREND) 92 (0) 54 (-6) 96 63
WIND 20FT/EARLY(MPH) SE 9 SE 8 E 9 E 10
WIND 20FT/LATE(MPH) SE 9 E 11 SE 9 E 12
MIXING HGT(FT-AGL/MSL) 6410 6100
TRANSPORT WND (MPH) SE 7 SE 10
VENT RATE (KT-FT) 38460 54900
DISPERSION 5 5
DSI 2 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-100800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 30 30 50
TEMP (24H TREND) 68 (-4) 83 (+3) 68 83
RH % (24H TREND) 97 (+3) 60 (-9) 98 69
WIND 20FT/EARLY(MPH) SE 6 SE 8 E 8 E 9
WIND 20FT/LATE(MPH) SE 6 SE 9 E 6 E 11
MIXING HGT(FT-AGL/MSL) 4160 4330
TRANSPORT WND (MPH) SE 8 SE 12
VENT RATE (KT-FT) 29120 43300
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-100800-
CENTRAL MOUNTAIN RANGE-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE NONE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 0 60 20 70
TEMP (24H TREND) 66 (-4) 87 (+4) 66 87
RH % (24H TREND) 97 (+4) 55 (-9) 95 62
WIND 20FT/EARLY(MPH) SE 5 SE 5 SE 6 E 6
WIND 20FT/LATE(MPH) LGT/VAR E 6 LGT/VAR E 8
MIXING HGT(FT-AGL/MSL) 6910 6880
TRANSPORT WND (MPH) E 5 SE 7
VENT RATE (KT-FT) 27640 41280
DISPERSION 5 5
DSI 1 6 1 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-100800-
CAYEY MOUNTAIN RANGE-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 10 10 20 50
TEMP (24H TREND) 68 (-3) 84 (+2) 68 84
RH % (24H TREND) 97 (+1) 59 (-6) 98 69
WIND 20FT/EARLY(MPH) E 6 SE 8 E 8 E 9
WIND 20FT/LATE(MPH) E 6 SE 9 E 6 E 10
MIXING HGT(FT-AGL/MSL) 4830 5130
TRANSPORT WND (MPH) E 8 E 12
VENT RATE (KT-FT) 33810 51300
DISPERSION 5 5
DSI 2 6 2 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-100800-
VIEQUES-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 40 50
TEMP (24H TREND) 75 (-2) 88 (+2) 75 88
RH % (24H TREND) 84 (0) 56 (-5) 89 63
WIND 20FT/EARLY(MPH) E 11 SE 10 E 11 E 11
WIND 20FT/LATE(MPH) E 11 E 9 E 11 E 11
MIXING HGT(FT-AGL/MSL) 3200 2830
TRANSPORT WND (MPH) E 12 E 14
VENT RATE (KT-FT) 32000 33960
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-100800-
CULEBRA-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 40 40
TEMP (24H TREND) 75 (-3) 89 (+2) 76 90
RH % (24H TREND) 87 (+4) 52 (-10) 89 60
WIND 20FT/EARLY(MPH) E 11 E 9 E 11 E 11
WIND 20FT/LATE(MPH) E 11 E 9 E 11 E 11
MIXING HGT(FT-AGL/MSL) 3200 2830
TRANSPORT WND (MPH) E 12 SE 15
VENT RATE (KT-FT) 32000 36790
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-100800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 10 0 20
TEMP (24H TREND) 73 (-3) 92 (+2) 73 92
RH % (24H TREND) 90 (+5) 42 (-12) 92 51
WIND 20FT/EARLY(MPH) E 11 E 13 E 12 E 13
WIND 20FT/LATE(MPH) E 11 SE 13 E 12 SE 16
MIXING HGT(FT-AGL/MSL) 4730 4590
TRANSPORT WND (MPH) E 10 SE 13
VENT RATE (KT-FT) 42570 50490
DISPERSION 5 5
DSI 3 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-100800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30 30
TEMP (24H TREND) 74 (-4) 86 (+1) 76 86
RH % (24H TREND) 87 (+5) 57 (-6) 91 66
WIND 20FT/EARLY(MPH) E 11 E 10 E 12 E 11
WIND 20FT/LATE(MPH) E 11 E 9 E 12 E 11
MIXING HGT(FT-AGL/MSL) 3100 3100
TRANSPORT WND (MPH) E 13 E 15
VENT RATE (KT-FT) 34100 40300
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-100800-
ST CROIX-
330 PM AST TUE JUN 9 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER CLEAR MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30 40
TEMP (24H TREND) 74 (-4) 87 (+1) 75 87
RH % (24H TREND) 89 (+6) 58 (-5) 92 65
WIND 20FT/EARLY(MPH) E 10 E 10 E 12 E 11
WIND 20FT/LATE(MPH) E 10 E 9 E 12 E 12
MIXING HGT(FT-AGL/MSL) 4900 4180
TRANSPORT WND (MPH) SE 10 E 15
VENT RATE (KT-FT) 44100 54340
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page